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Yes. If they are sunning themselves on the river bank, for example, they will run back into the river for safety when a large animal, such as a human being, or a lion, approaches. The reptilian brain is capable of feeling such emotions as fear and anger. Reptiles even have vasotocin, the chemical prescursor to the mammalian love hormone, oxytocin. Vasotocin is linked to sex and egg laying in reptiles, just as oxytocin is linked to sex and child birth in human beings. Therefore Vasotocin acts somewhat like a reptilian "love" hormone.

All animals with a brain will feel a degree of fear. They do not have complex emotions like mammals, but fear is a self-defence system embedded in practically any animal that has a brain.

Out of fear or hunger, all animals have the same emotions as humans

they are cold blooded by nature....a croc will let go out your grip if u punch ur thumb into its eyes..it will let go immediatey